Awning fan



June 24, 1941. o W CHASE 2,247,276

AWNING FAN Filed Oct. 25, 1940 Patented June 24, 1941 UNITED STATES.PATENT OFFICE 2,247,276 AWNING FAN Opal W. Chase, Little Rock, Ark.

Application October 25, 1940, Serial No. 362,738

3 Claims.

This invention relates to means for accomplishing room ventilation, andhas particular reference to a device of this character which is ofunitary construction and designed so that it may be quidkly attachableor detachable in order that it may be quickly and easily placed when theneed therefor arises and may be as readily removed and stored as duringthe winter months.

It further relates to such a device which is inherently adapted to drawoff the warmer air of theroom and which will cooperate readily with theordinary window construction in accomplishing not only the majorpurposes of the device, but in its regulation to conform with conditionsexisting.

The objects of the invention'are:

To malre a device which is of unitary construction which may be readilyattached for use, and detached for storage, and which is simple inconstruction and effective in operation.

The means by which the foregoing and other objects are accomplished andthe method of their accomplishment will readily be understood from thefollowing specification upon reference to the accompanying drawing, inwhich:

Fig. l is a sectional side elevation of the device installed.

Fig. 2 is a sectional front elevation taken on i the line ill-II of Fig.i.

Fig. 3 is a sectional plan taken on the line LlII-III of Fig. i.

Fig. l is a sectional side elevation showing a modified form oiconstruction; and

Fig. 5 a section taken on the line V- V of Fig. 4.

Referring now to the drawing in which the various parts are indicated bynumerals:

ii is a typical window frame having usual upper and lower sash it, itrespectively, the upper sash it being shown in all the views in iullylowered position.

Ell indicates a typical form of fan motor with vertical shaft driving ausual type of horizontal fan iii, this fan being disposed in a circularopening it through a horizontal diaphragm or plate 233.

In Figs. 1, 2 and 3 the diaphragm or plate 23 is secured to andsupported by a metal awning construction having side walls 25 and asloping top or roof 21?, the side walls depending past the diaphragm orplate 23 and being secured thereto as by fasteners such as nails orscrews 29, or otherwise as may be desired, and the topwall beingdownwardly bent at its outer edge to form a valance 3i, likewisedepending below the diaphragm and secured thereto. The side and roofwalls of this awning structure are secured to a peripheral frame workcomprising a horizontally disposed top bar 33 and depending side bars35, these bars being assembled and joined in unitary manner to form aframe structure adapted to lie flat against the window frame it. Theside bars have keyhole openings ti therein which are adapted to beseated over the heads of screws or bolts it secured into the windowframes and after such placing to be slid downward into interlockingengagement with such screws for the support and anchorage of thestructure to the window frame.

The fan it has an upwardly extending post ii with an. inclined upper endplate it rigidly secured to the roof portion 2? of the awning, as byrivets it, or otherwise as may appear desirable.

In Figs. 4 and 5 a structural metal frame work of side angle bars ill,and center channel member id connecting the upper bar ii-qi. and thediaphragm or plate i3-A, and a covering of canvas or other cloth ti, hasbeen substituted for the metal awning construction described, the plateiii1i. oi the supporting column tit-d of the fan motor li--A beingsecured to and supported by the channel tit. In either form of thedevice the awning and fan assembly are a unitary structure or unitadapted to be en.- gaged and disengaged from the window.

The window is prepared for the reception of the ventilating unit byplacing the tour bolts or screws ti! in suitable position to registerwith the keyhole openings of the unit to be used therewith, this beingdone by positioning the unit as it is to be supported and markingthrough the keyhole openings or by placing and marking through a templeton which the bolt locations have been cut, or the position of thesescrews may be determined by direct measurement. The screws or bolts arethen secured in the window frame with sumcient space left beneath theheads thereof to accommodate the thickness of the side bars it and thewindow is ready for placing of the awning. This placing is done inobvious manner by bringing the larger portion of the keyhole openings itover the fastener heads and against the window frame and then allowingthe unit to descend by its own weight or forcing it down intointerlocking engagement.

In making use of the device the upper sash of the window is lowered andthe motor connected as through a suitable wiring connector 53 to anelectric circuit,- ordinarily within the room itself. The current isturned on and the fan placed in operation drawing air from the inside ofthe room adjacent the ceiling and dischargingit through the diaphragm orplate outside of the building, the adiacency of the diaphragm to theends of the fan blades insuring that the air will be drawn from the roomrather than merely circulated around the outside ends of the blades aswould otherwise be entirely possible. Preferably the connector 53 is ofsuch length that the upper sash of the window may be raised tosubstantial closure without disconnecting it.

The awning largely, if not entirely, conceals the working parts of thedevice or even their existence and protects the working parts againstexposure to the elements. Under usual conditions of window uniformitythe unit may be shifted between any of several windows should it be sodesired.

. It will be understood that the appearance and detail of the device,particularly the attaching means may be varied without departing from myinvention.

I claim:

1. In ventilating means for use with a window opening having framemembers, a unit comprising an awning structure, a motor driven fancarried thereby and means for detachably securing said unit to saidframe member; said awning structure including side bars spaced apart anda transverse top bar secured thereto, a. roof secured to said top bar,extending forwardly and downwardly therefrom and terminatingin asubstantially vertical valance, side walls secured to said side bars andsaid roof and depending from said roof substantially to the bottom levelof said valance and a diaphragm having a circular opening therethrough,said diaphragm being intimately secured to said roof valance and thelower portion of said side walls; said fan unit including a supportingbracket secured to said roof, and a vertical shaft motor supported byand depending below said bracket, said motor shaft carrying fan bladessubstantially at the level of said diaphragm. said diaphragm openingbeing vertical shaft motor. f

concentrically disposed with relation to said fan shaft and of size toloosely surround said blades.

2. A ventilating unit, as for use to withdraw air through a windowopening; said unit including a housing structure and a motor driven fancarried thereby; said structure comprising a vertical centrally openframe, a Plate member secured adjacent the bottom of said frame andextending outward therefrom, a roof secured adjacent the top of saidframe, extending forwardly and downwardly therefrom and secured to theouter edge of said plate, and side walls secured to said roof, the sidesof said frame, and the side edges of said plate; said fan comprising ablades carried by said shaft and extending means supporting said motorfrom said structure with said fan blades substantially at the level ofsaid plate; said plate having a circular opening therethrough concentricwith said shaft and loosely surrounding the ends of said blades.

3. The combination with a window casing of air withdrawing meansincluding a housing structure adapted to be detachably secured to saidcasing, and a motor driven fan carried by said structure; said structurecomprising a vertical, centrally open frame, a plate member securedadjacent the bottom of said frame and extending outward therefrom, aroof secured adjacent the top of said frame, extending forwardly anddownwardly therefrom and secured to the outer edge of said plate, andside walls secured to said roof, the sides of said frame, and the sideedges of said plate; said fan comprising a vertical shaft motor, fanblades carried by said shaft and extending outward therefrom and meanssupporting said motor fromsaid structure with said fan bladessubstantially at'the level of said plate,

said plate having a circular opening therethrough concentric with saidshaft and loosely surrounding the ends of said blades; said frame havingopenings therethrough and said casing having complementary projectingmembers adapted for interlocking engagement with said openings todetachably secure said frame to said casing.

OPAL W. CHASE.

outward therefromand

